1.Design: API 594 2.Testing Inspection: API 598 3.ANSI Class 125/150 or DIN PN1 4.Special design project ... " to 42" N. B. Pressure Classes: ANSI 150, 300, 600, 900, 1500, 2500 & 4500. End Connections: Flanged, Buttweld, Socket Weld, Hub Connectors ... . Operation Manual, Electric, Hydrau-Pneumatic Actuator Design Codes API 6D, ANSI B16.34, ANSI 16.5, ASME VIII, API 6FA.